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Differences What are the advantages of each

Front view of GeForce 920M

Reasons to consider the
Nvidia GeForce 920M

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Significantly higher clock speed 954 MHz vs 606 MHz More than 55% higher clock speed
Better PassMark score 711 vs 213 More than 3.2x better PassMark score
More memory 2,048 MB vs 512 MB 4x more memory
Better floating-point performance 732.7 GFLOPS vs 38.78 GFLOPS Around 19x better floating-point performance
Higher texture rate 30.53 GTexel/s vs 4.85 GTexel/s More than 6.2x higher texture rate
More render output processors 16 vs 4 12 more render output processors
More texture mapping units 32 vs 8 24 more texture mapping units
More shading units 384 vs 16 368 more shading units
Higher memory clock speed 900 MHz vs 800 MHz Around 15% higher memory clock speed
Front view of GeForce 315M

Reasons to consider the
Nvidia GeForce 315M

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Lower TDP 14W vs 33W 2.4x lower TDP

Benchmarks Real world tests of GeForce 920M vs 315M

PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark

Features Key features of the GeForce 920M  vs 315M 

memory bandwidth Rate at which data can be read from or stored in onboard memory

GeForce 920M
14.4 GB/s
GeForce 315M
12.8 GB/s

pixel rate Number of pixels a graphics card can render to the screen every second

GeForce 920M
7.63 GPixel/s
GeForce 315M
2.42 GPixel/s

texture rate Speed at which a graphics card can perform texture mapping

GeForce 920M
30.53 GTexel/s
GeForce 315M
4.85 GTexel/s

floating point performance How fast the gpu can crunch numbers

GeForce 920M
732.7 GFLOPS
GeForce 315M
38.78 GFLOPS

shading units Subcomponents of the gpu, these run in parallel to enable fast pixel shading

texture mapping units Built into each gpu, these resize and rotate bitmaps for texturing scenes

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